Tire



alrch 18 1924." I

E. c. JACOBSCJNY TIRE Filed Oct. '7'. 1922 Patented Mar. 18, 1924.

cFFlcE.

ELMER C. JACBSON, BOY, WASHINGTON.

TIRE

Application led October 7, 1%522. `Serial No. 593,026. Y

eral object of the invention beiner to provide a detachable tread part for the t1re.

Another object of the inventionv is to provide means for holding the tread part from slippingo' the tire and preventing it froml moving on the tire.

's invent-ion also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim. l

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts 4throughout the several views, and in whichzl Figure 1 is a side view of a tire constructed in accordance with my invention.

Figure 2 is a transverse section.

Figures 3 and 4 are detail views.

In these views 1 indicates-the tire which is provided wlth circumferentially extend-A ing grooves 2 in its tread part. The detachable tread is shown at 3, and this tread is of substantially semi-circular shape in cross section and has beads 4 at its edges through which pass a plurality of wires 5. The inner face of the tread is provided with a.

number of circumferentially extending projectins 7 which are designed lto engage the grooves 2.

The tread is placed on the tire when the -same is in deflated condition and then the tire is inflated. The projections and beads act to hold the tread in place and also act to prevent movement of the tread on the tire. This tread will prevent punctures and will take the wear olf the tire. After the tread has become worn it can be replaced by a new one or the tire can be used without it.

It is thought from the foregoing description thatthe advantages and novel features of my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claim.

WhatIclaim is:.- Y

A tire of the class described comprising` a. shoe 'having cireumferentially extending grooves in its tread portion, and a tread member of trough shape in cross section having circumferentially extending ribs on` its inner face for engaging` the grooves in,

,the shoe, said tread member'having portions 4 extending laterally :beyond said ribs, said portions at their outer edges provided with beads, and said ribs and beads having reinforcing wires therein to prevent the saidmember from expanding` and permitting the ribs to move relatively to the said circumferentially extendin grooves.

In testimony w ereof I afix my signature.

ELMER C. JACOBSON. 

